Flushing-valve.



E. RICHARDSON.

FLUSHING VALVE.

APPucATloN man :uw 22. m2.

Patentedv Apr. 6, 1915.

*HE NORIS PETERS Co.. FHOm-LITHO., WASHINGTON. D. C,

lTE) STATES PATENT @Fitl EDRO RICHARDSON, 0F BALTIMORE, MARYLAND,ASSIGNOR OF ONE-HALF T0 THOMAS R. JENKINS, JR., 01?' BALTIMORE,MARYLAND.

FLUSHINGr-VALVE.

Application filed July 22, 1912.

To all whom it may concern.'

Be it known that I, EDRo RICHARDSON, a citizen of the United States,residing at Baltimore, in the State of Maryland, have in vented certainnew and useful Improvements in Flushing-Valves, of which the followingis a specification.

This invention relates to improvements in flushing valves for anypurpose where it is desired to provide a flow of water for a period oftime which will then automatically shut on'.

The invention is particularly adapted for use in flushing water closetsbut may be readily used elsewhere and for other purposes.

One object of the invention is to provide an improved construction ofthe so-called push button form of liushing `valve in which the flushingoperation is started by simply actuating a push-button.

Another object of the invention is to ma.- terially simplify and cheapenthe construction of push-button flushing valves, as well as to reducetheir cost of maintenance to a minimum.

lilith these and other objects in view the invention is illustrated inthe accompanying drawing, wherein,

Figure 1, shows an exterior side elevation of the improved valve. Fig.2, illustrates a vertical longitudinal section thereof on a largerscale. Fig. 3, shows a sectional plan view through the interiormeclianisni,-the section being taken on the horizontal line 3 3 of Fig.2. Fig. 4, illustrates another sectional plan view through the innercylinder,-this section being taken on the horizontal line 4 4 of Fig. 2,and Fig. 5, shows a horizontal section through the outer shell or casingand also through the piston stem that carries the inlet controlvalve,-this section being taken on the horizontal line 5-5 of Fig. 2.

Referring to the drawing by numerals, 1, designates a. cylindrical shellor casing having an rip-turned inlet nozzle, 2, that enters the shell orcasing at the side and curves upwardly therefrom and whose upper end isprovided with an annular valve seat, 3, which has a central andhorizontal position in the interior of the shell or casing. Below theinlet nozzle, the shell or casing is provided with an outlet, 4, towhich the flush Specification of Letters Patent.

Patented Apr. 6, 1915.

Serial No. 710,898.

extends vertically in the cap from a de- Y pending circular base, 12,and said base and sleeve form a sustaining means for a vertical stem,13. A suitable collar, 14, is interposed between the stem, 13, and theupper end of the sleeve, 11, and serves as a packing about the stem.rFhe upper end of the stem, 13, is provided with a head which forms apush-button, 15, and said head seats in the enlarged central chamber,10, at the top of the cap, 5. A spiral spring, 16, encircles the sleeve,11, and has position in the central annular recess, 8, in which it iscompressed so that its upper end will press beneath the head or button,15, and keep the same together with the stem, 13, which is carried byit, in a normally elevated position. The under side of the head orbutton, 15, and the upper end of the stem, 13, are detachably connectedby one part having a threaded plug, 17, and the other a threaded socket,18.

The base, 12, which depends from the center of the cap pendantlysustains a cylinder, 19. This cylinder has no movement in the outershell or case, 1, but is held rigidly and in a fixed position betweenthe cap and the up-turned end of the inlet nozzle, 2. The lower pendantend of the cylinder, 19, has a head, 20, which is secured thereto bymeans of a screw threaded flange, 21, and this cylinder head is providedwith a central opening through which a piston stem, 22, passes. Theupper end of the cylinder, 19, has a reduced tubular extension, 23,which screws onto the base, 12, at the center of the cap, 5, and bywhich the cylinder is pendantly sustained from the under side of saidcap. This reduced extension, 23, has lateral ports, 24, through its sidewall and a vertical port, 25, extends down through the top wall, 26, ofthe cylinder so that the stem, 13, may pass through the extension, 23,and

also through the port, 25,-the latterY being provided with a valve seat,27, at its lower side so that a valve,28, on the lower end of the stem,13, may seat up against seat, 27, and close said port. It will be notedthat valve, 28, and stem, 13, are drawn upwardly by a constant springpressure from spring, 16, and consequently the valve is always seatedexcept in the act of setting the device in operation, at which momentthe push-button or head, 15, will be pushed inwardly momentarily tocause the valve to unseat but it immediately reseats when pressure onthe bottom is relieved.

The piston stem, 22, has a reduced and eX- teriorly-threaded upper end,29, and a metal washer, 30, is seated at the base of the reduced end andforms a bottom support for a flexible cup, 31, whose flanged rim, 32,closely engages the inner circular wall of the cylinder and forms apiston head therein. A reinforce plate, 33, is seated on the upper sideof the cup and is rigidly held thereon by means of a head, 34, thatscrews onto the reduced end, 29, of the stem. This head is provided witha tripod-shaped guide whose arms, 35 extend upwardly and laterallytherefrom and the eXtreme ends of said arms bear against the interiorvertical wall of the cylinder and serve as a guide to direct the stem,22, in its vertical movement.

The stem, 22, has a vertical passage, 36, extending from the lower endupwardly and an adjusting screw, 37, is provided near the upperend ofthe passage to more or less close the same. In the present instance thestem has a lateral port, 38, and the screw, 37, is arranged to more orless close the same, for a purpose presently to be described. The stemhas areduced lowerend, 39, and a metal washer, 40, is placed on said endto serve as a stiff backing for the upper side of a sealing disk, 41,which is also on said reduced end. Beneath the sealing disk, 41, thestem is provided with a reinforce washer, 42, and a nut, 43, on thelower end securely fastens said washers and sealing disk in place onsaid lower end of the stem. The operation of the valve is simple and asfollows,-.Supposing the valve to be connected with the water supply anddischarge pipes and the conditions to be as shown in the sectional viewin F ig. 2 of the drawing. In this normal shut-off condition, it will beseen that the cylinder, 19, above the cup or piston, 31, is filled withwater and that the valve or packing disk, 41,.is seated on the seat, 3,of the inlet nozzle so as to cut-off the flow of water therefrom.` Thepassage, 36, through the stem, 22, establishes communication between thesupply nozzle, 2, and the upper side of the; cup or pistoninthevcylinder, 19, and thereby provides the same pres-VV reduce 4the pressureat that side, consc-V quently the pressure against disks, 41, and,

42, at the lower end of the pistonv stem will be greater than that inthev cylinder after the latter is vented and disk, 41, will uncoverseat, 3,l on the end of inlet nozzle, 2, so

that water may pass vfrom said nozzle into the shell'or casing, 1,`andwill flow from the latter through outlet, 4, to the closet or otherpoint of discharge. During the Hushing operation the water from nozzle,2, will be directed against the lower end of the passage, 36, in thestem and some of it will pass up through said passage into the cylinder,19, and thereby gradually recharge that cyl# inder. The time consumedin' effecting this recharging of the cylinder depends upon the size ofthe escape port, 38, and may be varied by simply adjusting the screw,37. As soon as the pressure in the chamber 19, is restored, the pistonor cup, 31, therein will move downwardly and thereby. seat the disk, 41,on the seat, 3, of nozzle, 2, and again cut off the flow of water.Having thus described my invention wha I claim and desire to secure byLetters Patent is,-

In a flushing valve the combination with a shellhaving an outlet in itslower end and an upturned water-inlet above'said outlet,

of a detachable cap at the upper end ofthe shell, said cap having acentral depending base; `a cylinder sustained by the depending base ofthel cap; a piston in said cylinder and having a stem whose upper end isreduced in size; and a tripod-shaped head on the reduced end of the stemand having its arms in sliding contact with the interior wall of thecylinder when thepiston is making its movement. Y

In testimony whereof IraffiX my signature 1n presence of two witnesses.

EDRO RICHARDSON. vWitnesses Gr. FEED. VOGT, Y CHARLES B. MANN, Jr.

Copies of this patent may be obtained for ive cents each, by addressingthe Commissionerof Patents. Washington, D. C." i

